Got the AZO, ordering the Amidol

[Donald Miller]

As my memory serves me, it was $68.00 plus shipping.

[avandesande]

http://www.chemistrystore.com/ sells anhydrous sodium thisulfate, so you save on the shipping weight of the water in the hydrate.

[Ole]

My local supplier sells crystalline hypo for about $2/kg, anhydrous for $15... They have no "bulk option" for anhydrous, only analytic grade. The crystals are technical grade.

I wish there were a supplier of photographic chemicals here in Norway!

[c6h6o3]

</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (avandesande @ May 9 2003, 10:12 AM)</td></tr><tr><td id='QUOTE'> http://www.chemistrystore.com/ sells anhydrous sodium thisulfate, so you save on the shipping weight of the water in the hydrate. </td></tr></table><span class='postcolor'>
Do you still use 32 oz. dry measure per gallon as you would with prismatic rice crystals?

[bmac]

OK, as you may have seen from my post earlier today, the amidol and fix have arrived. A couple of questions about mixing now...

I bought 4 1 liter units of the Michael A Smith formula. The kits each have 30 g of Sodium Sulfite, 3 Grams Citric Acid, & 8 Grams of Amidol. Also included was a seprate baggie of Pot. Bromide 10 grams.

Looking at Michael&#39;s site, the Amidol formula calls for KBr (10% solution) 2 cc . IU imagine that this is the Pot. Bromide. How do I make this solution? and is 10 Grams enough for 4 liters of Amidol? I Plan on making it just prior to use each printing session.

[Ole]

10g of Potassium Bromide (chemical formula KBr) will make 100cc of 10% solution. That should last you a while...

[bmac]

So I would mix the 10g with 100 cc of Distilled water and I will be able to store it in a small container and just use 2cc per liter? Easy enough&#33; Any ideas for storage containers that small?

[Ole]

Dunno - I&#39;ve bought "chem lab authorised" Nalgene bottles in all sized from 100cc to 2liter, just to have enough. I figure you can never have too many bottles - just like trays - and find the 100cc ones really useful for all those fiddly little solutions. Like Pyrocat-HD, or Silver Nitrate for salt prints.

And mixing the 10g with 100cc water is what you&#39;re after, yes.

[Donald Miller]

Brian,
I bought small brown glass bottles...Maybe 20 oz? from one of the photo materials suppliers (believe that it was B&H). I imagine that any of the dealers that you have there should have them. If you can&#39;t locate them there, you might check a lab supply house. Good luck with the Amidol and Azo...I imagine that you will be in for a pleasant surprise. I know that I was.